Every president loses top staff during their first year in office, but an AP analysis of the latest White House filings has found that 37% of President Trump's staffers who worked in the 12-month period ending June 30 are now gone — a record for any president.

The big picture: As Axios Mike Allen reported last October, the massive staff exodus is "the biggest threat to the Trump presidency."

By the numbers:

•  141 staffers who worked in the White House as of June 30 of last year have left.
• 138 employees have been hired since then.
• 61% of Trump’s senior-most aides have departed.
• At 42%, Bill Clinton is the only president in the last five administrations to have similar senior-staff turnover rate, reports the AP.

Take note: The analysis didn't take into account staffers who arrived and exited during that yearlong period, such as former White House communications director Anthony Scaramucci, who lasted less than two weeks.